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NARA [144]
3 years ago
9

Which of the following is an example of a nonmetal that is solid at room

Chemistry
1 answer:
Darya [45]3 years ago
6 0

Answer:

Carbon

Explanation:

At room temperature20–22 °C (68–72 °F), nitrogen and oxygen are gases, while bromine is a liquid.

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which of the following testable questions will provide evidence that elements in the same group have similar properties?
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The testable question which will provide evidence that elements in the same group have similar properties is valency

<h3>What is the valency?</h3>

In essence, how many electrons are present in their outermost shell.

Valency and Groups in the periodic table, elements are arranged in order of their atomic numbers and hence, the periodic table is a systematic arrangement of elements in an array of vertical columns called Groups and horizontal arrays called Periods.

  • Complete question here:

which of the following testable questions will provide evidence that elements in the same group have similar properties A. Valency B. Orbit C. Group D. Period

Since, the reactive capacities of elements is dependent on the number of electrons on its outermost shell, we can conclude on this note that, Elements in the same group have similar properties.

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2 years ago
Intermolecular forces dipole differences london dispersion
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3 years ago
How many grams of glucose are needed to prepare 144.3 mL of a 1.4%(m/v) glucose solution?
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2.0202 grams

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1.4% (m/v) glucose solution means: 1.4g glucose/100mL solution.

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